09.01 6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.12.1 NC setting data (NC SD)
Units
The unit of the entered values is defined in bit 3 of MD 520*:
Bit 3 = 0: Unit rev/min
Bit 3 = 1: Unit 0.1 rev/min
Note
The maximum spindle speed value is determined by the minimum of the following values:
• MD 403* to 410* ”Maximum speed” per gear ratio
• MD 451* ”Maximum chuck speed”
• SD 401* ”Programmable spindle speed limitation with G96”;
programmed with G92
• SD 403* ”Programmable spindle speed limitation”;
programmed with G26
Setting data bits
General bits
7 6 5 4 3 2 1 0
Bit No.
SD MD
5000 Calc. of
overtravel
compen-
sation
L900 without
safety
distance of
drilling axis
Cycles L97
L99 active
with G620 Turning
cycles
Drilling and
milling
patterns
Drilling
cycles
5001
Auto.
storage. of
PP on hard
disk (as from
SW 5)
Display
workpiece-
related ac-
tual value
system
Function ext. from UMS03 used
SD 5000
Bit 2-0 Bit 2-0=0 Standard cycles up to UMS02
1)
active
Bit 2-0=1 Standard cycles up to UMS03
1)
active
Bit 7 Bit 7=1 Overtravel compensation functions
Bit 7=0 No calculation of overtravel compensation
SD 5001
Bit 2 Bit 2=1 The part program is either stored in the source workpiece or in workpiece
"STANDARD" or NCKTMP, depending on the setting in MD 5189 bit 3.
Bit 0 Bit 0=1 The actual-value display for axes (actual position) refers to the workpiece zero
and not to the machine zero (reference point)
Note on bit 0:
The display is deselected with mode group reset, it remains active after program end
(M02/M30).
Channel-specific bits
7 6 5 4 3 2 1 0
Bit No.
SD MD
540* Workp. not
loaded on
POWER
ON
(from SW 6)
Axis
converter
On/Off
Bit 1=1: The workpiece selected in the channel is not loaded in NCK on POWER ON.
Only active in combination with MD 5025.7.
Bit 1=0: The workpiece selected in the channel is loaded in NCK on POWER ON. Only
active in combination with MD 5025.7.
Bit 0=1: Axis converter On
Bit 0=0: Axis converter Off
_______
1) Texts generated on the WS 800A NC workstation and stored in the User Memory Submodule.
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Siemens AG 1992 All Rights Reserved 6FC5197- AA50
6–227
SINUMERIK 840C (IA)